Evidence map›Paper›PMID 33959272›Full record

ArticleClinical kidney journal2021

Beta-2 microglobulin and all-cause mortality in the era of high-flux hemodialysis: results from the Dialysis Outcomes and Practice Patterns Study.

Eiichiro Kanda, Daniel Muenz, Brian Bieber, Aleix Cases, Francesco Locatelli, Friedrich K Port, Roberto Pecoits-Filho, Bruce M Robinson, Jeffrey Perl

Open access · goldAbstract read
In one paragraph

Article in Clinical kidney journal, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
2.4field-weighted citation impact, top 10% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 35 citations in OpenAlex.

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  15. Association between serum βBMC nephrology · 2023
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 6 institutions in 5 countries.

Eiichiro KandaMedical Science, Kawasaki Medical School, Okayama, Japan.
Daniel MuenzArbor Research Collaborative for Health, Ann Arbor, MI, USA.
Brian BieberArbor Research Collaborative for Health, Ann Arbor, MI, USA.
Aleix CasesMedicine Department, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Universitat de Barcelona, Barcelona, Spain.ORCID https://orcid.org/0000-0002-6962-8184
Francesco LocatelliDepartment of Nephrology, Ospedale Alessandro Manzoni, Azienda Socio Sanitaria Territoriale, Lecco, Italy.
Friedrich K PortArbor Research Collaborative for Health, Ann Arbor, MI, USA.
Roberto Pecoits-FilhoArbor Research Collaborative for Health, Ann Arbor, MI, USA.
Bruce M RobinsonArbor Research Collaborative for Health, Ann Arbor, MI, USA.
Jeffrey PerlDivision of Nephrology, Michael's Hospital, University of Toronto, Toronto, ON, Canada.
Arbor Research Collaborative for Health · USAlessandro Manzoni Hospital · ITConsorci Institut D'Investigacions Biomediques August Pi I Sunyer · ESKawasaki Medical School · JPSt. Michael's Hospital · CAUniversity of Michigan · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBeta-2 microglobulin (β2M) accumulates in hemodialysis (HD) patients, but its consequences are controversial, particularly in the current era of high-flux dialyzers. High-flux HD treatment improves β2M removal, yet β2M and other middle molecules may still contribute to adverse events. We investigated patient factors associated with serum β2M, evaluated trends in β2M levels and in hospitalizations due to dialysis-related amyloidosis (DRA), and estimated the effect of β2M on mortality.

methodsWe studied European and Japanese participants in the Dialysis Outcomes and Practice Patterns Study. Analysis of DRA-related hospitalizations spanned 1998-2018 (

resultsMedian β2M changed nonsignificantly from 2.71 to 2.65 mg/dL during 2011-18 (P = 0.87). Highest β2M tertile patients (>2.9 mg/dL) had longer dialysis vintage, higher C-reactive protein and lower urine volume than lowest tertile patients (≤2.3 mg/dL). DRA-related hospitalization rates [95% confidence interval (CI)] decreased from 1998 to 2018 from 3.10 (2.55-3.76) to 0.23 (0.13-0.42) per 100 patient-years. Compared with the lowest β2M tertile, adjusted mortality hazard ratios (95% CI) were 1.16 (0.94-1.43) and 1.38 (1.13-1.69) for the middle and highest tertiles. Mortality risk increased monotonically with β2M modeled continuously, with no indication of a threshold.

conclusionsDRA-related hospitalizations decreased over 10-fold from 1998 to 2018. Serum β2M remains positively associated with mortality, even in the current high-flux HD era.

Indexed as

dialysisdialysis-related amyloidosisESRDhigh flux dialysisβ2M

Identifiers

PMID33959272
PMCPMC8087125
OpenAlexW3094982779

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.